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Originally Posted by Topspinmo
IMO I have my doubts? Like FB or any other site with free or minimum charge it’s what they do with you’re information? And of course read all the fine print? I guess for some that will give up their private information it’s worth it. For me no, I know my family history black to early 1700s.
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I wonder if there is a cut-off point at some time in one's history. If there was not, everone's DNA would trace back to Africa.
In human genetics, the Mitochondrial Eve (also mt-Eve, mt-MRCA) is the matrilineal most recent common ancestor (MRCA) of all living humans. In other words, she is defined as the most recent woman from whom all living humans descend in an unbroken line purely through their mothers and through the mothers of those mothers, back until all lines converge on one woman. The male analog to the "Mitochondrial Eve" is the "Y-chromosomal Adam" (or Y-MRCA), the individual from whom all living humans are patrilineally descended. -
Mitochondrial Eve - Wikipedia
If you go even further than this researchers have discovered Neanderthals and Denisovans not only mated with each other, they also mated with modern humans. “When the Max Plank Institute [for Evolutionary Anthropology] began getting nuclear DNA sequenced data from Neanderthals, then it became very clear very quickly that modern humans carried some Neanderthal DNA,” says Alan R. Rogers, a professor of anthropology and biology at the University of Utah -
How Did Humans Evolve? - HISTORY